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Easy to install power supply for an HP Elite m9300z series?

Hello, I'm trying to install a new power supply to replace the piddly default (300 watt) and I'd like to find one that's easy to install into my HP case. I'm a complete novice when it comes to these things so if it has extra plugs and cords I'm going to get confused. Please recommend something that fits in a smaller case and is user-friendly. Thanks!

Public Comments

1. ok buy something between 450 and 500 watt , otherwise you will have to much cables , is really easy to install and is only 4 screw , one cable to your motherboard 1 for you CPU , 1 for dvd , 1 for your cd , and 1 for your floppy check her and see the different http://savenow.webs.com/powersupplies.htm enjoy
2. I don't see why you would upgrade if you do not change any other component, and they are all easy to install, i think the HP cases have a tab you have to push, and like 3-4 screws. How small is your case? open it up and measure the power supply, you may need a micro ATX if your case is small.